[Isolated rupture of the biceps tendon of the knee joint].

Traumatic injuries of the posterolateral structures of the knee are normally the result of a severe rotation trauma, and as a rule, associated with intraarticular lesions. Two cases will be presented, whereby, without injuries to the knee, an isolated rupture of the distal part of the biceps femoris tendon occurred. Intraoperatively as also histologically there was no evidence of degenerative changes. The operative treatment in both cases achieved a good functional result. The better result was achieved with rigid fixation and a limiting protective rehabilitation program as it is used after the operative reconstruction of the torn posterolateral structures.